Michigan Deaths and Burials, 1800-1995," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FHCP-C12 : 10 February 2018), Bert Brown in entry for Maxine Knapp, 03 Aug 1992; citing Constantine, St. Joseph, Michigan, reference 43-8-306; FHL microfilm 1,940,933.
Find A Grave, database and images (https://www.findagrave.com : accessed 08 February 2019), memorial page for Maxine B. Brown Knapp (14 Nov 1912–2 Aug 1992), Find A Grave Memorial no. 89120034, citing Riverside Cemetery, Three Rivers, St. Joseph County, Michigan, USA ; Maintained by Rebecca Nielsen Drumm (contributor 47105628) .
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